The high spring flows would mimic the historic flows of the Missouri, which were larger due to runoff from snow melt.
Experts have come up with all sorts of hypothetical ways the E. coli could have gotten into the spinach, from manure that wasn't properly composted to runoff from cattle farms to contaminated irrigation water.
If no candidate gets a majority of the vote in the first round, the top two will progress to a runoff to be held June 16-17.
Tsvangirai won the most votes in the March election, but not enough to avoid a runoff, according to the government's official count.
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If those requirements aren't met, candidates will head to a runoff vote, scheduled for June 17.
Democratic hopefuls Mark Green and Fernando Ferrer failed to win a majority Tuesday, sending them to the runoff scheduled for October 11.
In a third race with no incumbent running, the candidates are headed to a runoff election in May since neither garnered more than 50 percent of the vote.
After fierce international criticism, Karzai recently agreed to a runoff.
Former Charlotte Mayor Richard Vinroot, the 2000 Republican gubernatorial candidate, led the field in the July 20 primary with 31 percent of vote and was headed to a runoff with Ballantine, who garnered 29 percent.
But he said exit polls showed he would win an outright majority, enabling him to avoid a runoff and urge opposition leaders to work with him.
Kerry persuaded Afghan President Hamid Karzai to agree to an election runoff in 2009, and he traveled to Pakistan after a series of incidents, including the raid that killed bin Laden.
Ethanol mandates are prompting more and more corn to be planted on land that is poorly suited for agriculture, causing erosion and pesticide runoff to infiltrate groundwater and aquifer resources.
The result left Karzai short of the 50 percent need to avoid a runoff.
Karzai agreed to the November runoff election after intense diplomatic arm twisting by the United States.
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They can also interact with other runners, challenging someone overseas to a weeklong runoff.
It has put forward a clean water action plan to deal with runoff from city streets and farms.
And French National Front Leader Jean Marie Le Pen made it through to the presidential runoff election in 2002.
During a visit to Kabul Sunday, Kouchner said he expected Karzai to win the runoff, if one was needed.
Mr. Morsi had planned on Sunday to meet self-stylized "revolutionary" presidential hopefuls who failed to win enough votes to clear the runoff race.
Gov. David Dewhurst, the favorite in the Senate race, had about 45% of the vote, below the majority needed to avoid a runoff.
Rep. Jimmy Hayes of Louisiana switched from Democrat to Republican in 1995 and then failed to win a runoff primary in the following campaign.
The Zimbabwe Election Commission said MDC candidate Morgan Tsvangirai received more votes than incumbent Robert Mugabe but not enough to avoid a runoff.
To avoid a runoff, Correa needed a simple majority or 40 percent of the vote plus a 10-point margin over the No. 2 vote-getter.
Mike Porcaro, owner of an advertising business, said he is getting his pump ready to divert mountain runoff away from his four-bedroom house there.
Karzai spoke shortly after Afghanistan's Independent Election Commission certified the election results, which gave him less than the 50 percent needed to avoid a runoff.
Tsvangirai garnered the most votes in March but did not win enough to avoid a runoff with 84-year-old Mugabe, who has ruled the country since its independence.
Under Afghan law, the Electoral Complaints Commission is the final arbiter of fraud, but the authority to order a runoff is in the hands of the Independent Election Commission.
If Weiner does enter the race, he could hurt Quinn's chances of getting the 40 percent of the primary vote she would need to avoid a runoff, Carroll said.
Each section of the roof will contain different levels of soil that will aid the Bureau of Environmental Services in determining which is best to reduce stormwater runoff during a three-year performance study.
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